<?hh // strict
/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the "hack" directory of this source tree.
 *
 *
 */

function test(): void {
  $x = new Vector(null); // new tvar v, $x:Vector<v>
  $x[0] = $x; // Vector<v> <: v --> error
}
